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(No Model.)

C. HENDERSON.

COMBINATION LOCK.

l.. I l l 'l I .air llnnmlllll" "l" ""l hilmlmlfllllln MMM n'ttlsirTnnbSTnTns BaTnniT Ormea@ GAVAN HENDERSON, OF BOSTON, MASSACHUSETTS,ASSIGNOR OF ONE- HALF TO JOHN XV. HORNE, OF SAME PLACE.

COMBINATIONLOCK.

SPECIFICATIUN forming part of Letters Patent No. 387.300, dated August'7, 188B.

Application tiled January 24, 1888. Serial No. 261,796.

T0 @ZZ whom, it may concern.'

Be it known that I, GAVAN HENDERSON, of Boston, in the county ofMiddlesex and State of Massachusetts, have invented a new and usefulImprovement in Co1nbination-Locks, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, forming a part of this specification, in explaining itsnature.

The object of the invention is to provide a combinatioulock of simple,inexpensive, and compact construction.

In the drawings, Figure 1 is a view, in elevation, of a box having mycombination-lock attached thereto. Fig. 2 is a View, in elevation, of aportion of a box, the front plate ofthe lock being removed to show theinterior construction thereof, and representing the position of theparts when locked. Fig. 3 is a view of the same parts, showing theirposition when unlocked. Fig. 4t is a vertical section of a portion ofthe box and look enlarged. Fig. 5 is a view in horizontal section,enlarged, of a portion or" the lock. Figs. 6, 7, and 8 are views of thetumblers employed. Fig. 9 is a view of the washer which is interposedbetween the tumbler-s.

Referring to the drawings, A represents lthe case of the lock.

c is a slide-bolt mounted on one plate ofthe locl ,and represented asformed upon the slide plate a2. This slide-plate is moved by a lever,da, attached to a shaft or turning-stud, aiwhich extends to a positionon the outside ofthe front plate of the lock, and has a iinger-piece,c5, or other end by which it maybe easily turned. The stud a* is thefulcrum ofthe lever a, and the lever is connected with the slide-platec2 by means of a pin, a, secured to said plate, and which extends intoalong recess, al, at the outer end of the lever a3. The bolt c is formedby cutting or removing a section of the plate a2 to form the recess a8.(See Fig. 3.)

B B B2 represent tu mblers. They are annular in shape, and each has anopening, b. The tumbler B has the inward projection or tooth b', thetumbler B the inward projections or teeth b2 b3, and the tumblerBl theprojections b4 c5, which form a recess, 116. These tumblers are held ina cylindrical case, G, secured to the inner plate, c, of the lock, saidcase being (No mmlelJ of asize to hold the tumblcrs and permit them tobe turned therein, and the tumblersv are separated from each other byannular washers D, each of which has an opening, d, and an outwardextension or tongue, d', which enters a recess, cl2, in the casing C.This construction prevents the washers from being turned upon theturning of the tumblers, and always mai-ntains the openings d in linewith the opening di" of the case C.

The tumblers B B B'Z are operated by means! of a spindle, E, whichextends from the operating-button e through the cavity of the tumblersand washers, and has a bearing in the case-plate c. This spindle hasextending from it an arm or wing, e', which enters the recess b6 of thelower tumbler, B, between the pron jections b2 b3 of the tumbler B', andextends to come in line with the projection b upon the tumbler B; and inorder to set the tumblers to allow the bolt to be moved it is necessarythat the spindle should be rst moved or turned in one direction to bringthe opening b of the tumbler B in line with the opening d3 in the caseC, and then that its movement should be reversed in order that thesecond tumbler B should he moved to bring its opening b in line with theopening d3, and then to be again turned in the direction iu which it wasfirst turned to move the tumbler B2 sufficiently to bring its opening bin line with the said opening d3.

There is attached tothe arm of the slide-plate a2 a thin lockingbar, f,preferably integral with the plate, and which is of a size to enter theopening di' in the case C and the openings b of the tumbler-s when theyare moved into line with the said opening d3, and when they are somoved, by turning the stud c, the bolt ct may be moved, the lockingbar fbeing unobstructed and riding freely into the openings d" b. If,however, one or more of the tumblers should be so turned as to close theopening d?, of course the locking-bar cannot then be turned or moved bythe spindle. I prefer to make the outer end ofthe spindle square, asrepresented in Fig. 5, and to form in its operatingbutton a square holefor its reception. By this connection there is provision for fourdifferent connections between the dial and the spindle. F is the dial.It is divided into any desired number of spaces, which are numbered orlet6 IOO tered,and there is arranged upon the escntchecn-plate of thelock a line or indicator, to which a numbered or lettered line of thedial is moved in setting the tu rnblers.

The ad vautages of the construction arise very largely from itssimplicity, from its compact form, and from its cheapness.

Having thus fully described my invention,I claim and desire to secure byLetters Patent of the United States- 1. The combination, in acombinationlock, ofthe slide-plate,having a bolt, a, and the locking-barj', means for moving the slide-plate and bar, the tumbler-casing C,having the opening d3, the annular tumblers B B B2, or two or more ofthem, having the openings b, and the projections or teeth, as specified,and the operatingspindle E, having the Wing e', which engages theprojections of the tumblers, as and for the purposes described.

2. The combinaion, in a combination-lock, of the tumbler-case C, theannular tumblers B B B2, having the openings b and inwardextendingprojections,and the Washers D, hav ing the openings d andholdingextensions d', substantially as described.

the tumblers B B B2, having openings b and projections, as specified,the Washers D, having the openings d and extensions d', and theoperating-spindle E, having the wing e', substantially as described.

4. The combination, in a combination-lock, of the tumbler-case C, havingthe openings d3 d2, the tumblers B B' B2, having the openings b andprojections, as specified, the Washers D, having the openings d andlocking-extensions d', the spindle E, having the Wing e and a squarehead,with the button e, having a square hole to receive the end of thespindle and permit it to be adjusted into other positions in relationthereto, substantially as described.

GAVAN HENDERSON.

Witnesses:

F. F. RAYMOND, 2d, J. M. DoLAN.

